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Permanent link (DOI): https://doi.org/10.7939/R3Z95J

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Biological patterns and processes of glass sponge reefs Open Access

Descriptions

Other title
Subject/Keyword
baseline mapping
silica sink
hexactinellida
porifera
glass sponge reef
Type of item
Thesis
Degree grantor
University of Alberta
Author or creator
Chu, Jackson Wing Four
Supervisor and department
Leys, Sally (Biological Sciences)
Examining committee member and department
Leighton, Lindsey (Earth & Atmospheric Sciences)
Roland, Jens (Biological Sciences)
Vinebrooke, Rolf (Biological Sciences)
Department
Biological Sciences
Specialization

Date accepted
2010-09-09T19:13:30Z
Graduation date
2010-11
Degree
Master of Science
Degree level
Master's
Abstract
The glass sponge reefs of western Canada are modern analogues to ancient reefs and are unique habitats requiring conservation. However, the patterns and processes of the glass sponges have not been empirically studied. Here, I characterized the biology of the glass sponges in their reefs. I examined the community structure of the sponges at 3 reefs in the Strait of Georgia (SOG), their role in silica cycling, and the stable isotopes (δ13C and δ15N) of the reef forming sponge Aphrocallistes vastus. Sponges are spatially structured in patches which localize the abundance of other animals. Long term dissolution of spicules is negligible and thus a reef can be considered a silica sink. Lastly, isotope compositions can differentiate populations of A. vastus and depleted carbon signatures at 2 reefs suggest a terrestrial component in their diet. My work represents the biological baseline of 3 glass sponge reefs in the SOG.
Language
English
DOI
doi:10.7939/R3Z95J
Rights
License granted by Jackson Chu (jwchu1@ualberta.ca) on 2010-09-09 (GMT): Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of the above terms. The author reserves all other publication and other rights in association with the copyright in the thesis, and except as herein provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
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